欲除漆包铜线表面的油漆,可将铜线放在酒精灯火焰上灼烧后,再将其放入某种试剂中,即

题型:选择题

问题:

欲除漆包铜线表面的油漆,可将铜线放在酒精灯火焰上灼烧后,再将其放入某种试剂中,即可除净,该试剂是[ ]

A.乙醇

B.醋酸

C.硝酸

D.硫酸

考点:乙醇
题型:选择题

补全对话(10分)

A; Hi,Bill!Congratulations!

B:Thank you .You watched the match ,didn’t you ?

A: Of  course .

B: It wasn’t easy to win the match .____小题1:______

A:  But your team is even stronger .

B: We must thank our PE teacher .He kept telling us to remember teamwork.______小题2:______.

A :Yes ,I agree .Teamwork is very important in playing football.____小题3:____.

B : That’s true .

A: I hear the No. 2 Middle School team is playing against the No. 3 Middle School team . Lets go and watch it .

B:_____小题4:_______.

A:_____小题5:_______.

选项

A.What a pity !

B.Yes , but it has already finished .

C.The No. 2 Middle School team is really strong .

D.A single good player can never win a match .E. We did as he told us and we won the first place in the league at last !

题型:选择题

李某,男,70岁。胸闷痛反复发作10年,加重半小时,现胸痛彻背,心慌,大汗出,四肢厥冷,面色唇甲青紫,脉沉微欲绝。此时辨证分型为()

A.气阴两虚

B.气虚血瘀

C.阴寒凝滞

D.心阳欲脱

E.胸阳虚衰

题型:选择题

可损害子代生殖系统并影响生育能力的磁场是()

A.极低频电磁场

B.低频电磁场

C.中频电磁场

D.高频电磁场

E.极高频电磁场

题型:选择题

行包变更手续费的收费标准是多少?

题型:选择题

某商品流通企业经销一种轴承,近10年的实际销售量如下表所示由业务员进行预测。

时间(年)1234567891011
实际销售量(台)1322136614261384153217241600180018601830

运用一次移动平均数法进行预测,取m=3,第11年的销售量预测值为 ( )套。

A.1368

B.1708

C.1753

D.1830

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